2MKL:
reference: The structural analysis of shark IgNAR antibodies reveals evolutionary principles of immunoglobulins., Feige MJ, Grawert MA, Marcinowski M, Hennig J, Behnke J, Auslander D, Herold EM, Peschek J, Castro CD, Flajnik M, Hendershot LM, Sattler M, Groll M, Buchner J, Proc Natl Acad Sci U S A. 2014 Jun 3;111(22):8155-60. doi:, 10.1073/pnas.1321502111. Epub 2014 May 15. PMID: 24830426

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